maybe
to be clear if you put both molex to the same molex cable = not good
if each molex part attaches to completely different molex cables. it the psu had 18 gauge molex cable .
if the adapter wires are 18 gauge it could work.
Im going to snip the molex off. Then connect all positive wires to a 14g wire and all negative to a 14g wire and run directly to a server psu.